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M365 Changelog: (Updated) Plan sharing with file container

MC537955 – Updated April 20, 2023: Microsoft has updated the rollout timeline below. Thank you for your patience.

A new authorization model is implemented for Planner plans, which will be a ‘shared container-based’ authorization model, where OneDrive and SharePoint Online files can be linked to plans to provide users with access to the plan if they have access to the shared container. This means that file-based authorization for plans will provide streamlined access to roster-backed plans that are connected to one or more SharePoint Online/OneDrive files. Note: Graph API is available only in beta

For eg: A user with access to a Loop component or meeting notes that is linked to a plan in Planner will be able to access the plan without needing to be added as a roster member and thereby reducing any potential authorization errors that may arise owing to either roster limits or the absence of another user who can grant access.

When this will happen:

Standard Release: Microsoft will begin rolling out early May (previously early April) and expect to complete by mid-May (previously mid-April).

How this will affect your organization:

The users will have a revised authorization experience for the roster plans. The new authorization model allows users to access roster plans that have been shared with a file if they have access to the file (even if the user is not a direct member of the plan).

Users of a Planner plan will see an informatory note as “People with access to these files can also access this plan”.

Users who do not have access to the file (but are roster members) will be informed that a file is providing access to the plan but will not be informed what that file is.

What you need to do to prepare:

There is no action needed to prepare for this change. You may want to notify your users about this change and update any relevant documentation as appropriate.